Literary usage of Sweepback

Below you will find example usage of this term as found in modern and/or classical literature:

1.Aviation, Theorico-practical Text-book for Students by Benjamin Morreale Carmina (1919)"Angle of sweepback. — The angle of sweepback is the angle a (Fig. 16a) formed by
the leading edge of a wing with the lateral axis AB of an aeroplane. ..."

2.Bulletin by Federal Board for Vocational Education, United States (1917)"(n) sweepback. foj Streamline shape. In carrying out the above instructions, blue
prints and models showing the general construction of an airplane should ..."

3.Applied Aerodynamics by Leonard Bairstow (1920)"A similar conclusion as to absence of effect is reached for variations of sweepback
up to 20°. This type of wing modification is not very common, ..."

4.Learning to Fly in the U. S. Army: A Manual of Aviation Practice by Elisha Noel Fales (1917)"sweepback.—The horizontal angle (if any) that the leading edge of a machine makes
with the crosswise or lateral axis of an airplane. 63. ..."